Relations of Ordered Pairs

Which of these relations is a function?

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• 
• 
• 

A set of ordered pairs.

• relation

• domain

• range

• mapping

A set of numbers, or coordinates, written in the form (x, y).

• ordered pair

• x-coordinate

• y-coordinate

• discrete graph

The x-value of an ordered pair, represents the horizontal placement of the point. (12, 7) 12 is the x-coordinate

• x-coordinate

• y-coordinate

• discrete graph

• continuous graph

The y-value of an ordered pair, represents the vertical placement of the point.

• y-coordinate

• discrete graph

• continuous graph

• relation

The set of first numbers (x-values) of the ordered pairs in a relation.

• domain

• range

• mapping

• function

The set of second numbers (y-values) of the ordered pairs in a relation.

• range

• mapping

• function

• coordinate plane

A relation in which each element of the domain is paired with exactly one element of the range.

• function

• relation

• domain

• range

Illustrates how each element of the domain is paired with an element of the range.

• mapping

• function

• y-coordinate

• x-coordinate

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.